2005 Whidbey Island DGPS Appendix A.pdf

USCG Civil Engineering Unit Oakland DGPS Towers, Record Nos. 24, 25, 27 Contract No. HSCG83-05-D3-WF062 Whidbey Island – Oak Harbor, Washington

Tower Engineering Corporation A-1 1601 Fifth Avenue, Suite 1600

(206) 926-0508 Fax (206) 622-8130 Seattle, WA 98101

LIST OF PHOTOGRAPHS

PHOTO DESCRIPTION PAGE

1 120’ Guyed Tower: Overall view........................................................................A-2 2 120’ Guyed Tower: Equipment at base of tower ..............................................A-3 3 120’ Guyed Tower: Safety rail ...........................................................................A-3 4 120’ Guyed Tower: Tuning unit .........................................................................A-4 5 120’ Guyed Tower: Ball gap...............................................................................A-4 6 120’ Guyed Tower: Guy level 1..........................................................................A-5 7 120’ Guyed Tower: Guy levels 2, 3....................................................................A-5 8 120’ Guyed Tower: Rusty cotter pin, guy level 1 .............................................A-6 9 120’ Guyed Tower: Cold-galvanized cotter pin, guy level 1 ............................A-6 10 120’ Guyed Tower: Rusty bolt, guy level 1 .......................................................A-7 11 120’ Guyed Tower: Rusty bolt, guy level 2 .......................................................A-7 12 120’ Guyed Tower: Guy pull-off, guy level 3 ....................................................A-8 13 120’ Guyed Tower: Isolator series on guy level 3 ............................................A-8 14 120’ Guyed Tower: Grounding anchor, guy anchor B .....................................A-9 15 120’ Guyed Tower: Grounding anchor, guy anchor B, close up.....................A-9 16 120’ Guyed Tower: Guy-tension adjustment ..................................................A-10 17 120’ Guyed Tower: Guy tensioner...................................................................A-10 18 30’ Tower: Overall view ...................................................................................A-11 19 30’ Tower: Base of tower.................................................................................A-11 20 30’ Tower: Weather-monitoring equipment....................................................A-12 21 30’ Tower: GPS unit .........................................................................................A-12 22 30’ Tower: DGPS, GPS units ...........................................................................A-13 23 30’ Tower: Cold-galvanized top mounting bar ...............................................A-13 24 30’ Tower: Rusty GPS mounting hardware ....................................................A-14 25 30’ Tower: Cold-galvanized GPS mounting hardware...................................A-14 26 20’ Tower: Overall view ...................................................................................A-15 27 20’ Tower: Base of tower.................................................................................A-15 28 20’ Tower: Rusty GPS mounting hardware ....................................................A-16 29 20’ Tower: Cold-galvanized GPS mounting hardware...................................A-16 30 20’ Tower: Rusty top mounting bar ................................................................A-17 31 20’ Tower: Cold-galvanized top mounting bar ...............................................A-17

Tower Engineering Corporation A-2 1601 Fifth Avenue, Suite 1600

Tower Engineering Corporation A-3 1601 Fifth Avenue, Suite 1600

Photo No. 2

Photo No. 3

Photo No. 1 (Previous Page) - Overall view of the 120-foot guyed DGPS tower.

Photo No. 2 - Equipment at the base of the 120-foot guyed DGPS tower.

Photo No. 3 - Safety rail on the 120-foot guyed DGPS tower.

Tower Engineering Corporation A-4 1601 Fifth Avenue, Suite 1600

Photo No. 4

Photo No. 5

Photo No. 4 - Tuning unit at the base of the 120-foot guyed DGPS tower with connection to tower above the insulator.

Photo No. 5 - Ball gap at the base of the 120-foot guyed DGPS tower; no build-up from lightning strikes has developed on the inner surfaces.

Tower Engineering Corporation A-5 1601 Fifth Avenue, Suite 1600

Photo No. 6

Photo No. 7

Photo No. 6 - General view of the first guy level (45-feet) of the 120-foot guyed DGPS tower.

Photo No. 7 - General view of the second (82-feet) and third (133-feet) guy levels of the 120-foot guyed DGPS tower.

Tower Engineering Corporation A-6 1601 Fifth Avenue, Suite 1600

Photo No. 8

Photo No. 9

Photo No. 8 - A rusty cotter pin on the pull-off on the first guy level (45-feet) of the 120-foot guyed DGPS tower.

Photo No. 9 - A cleaned and cold-galvanized cotter pin on the pull-off on the first guy level (45-feet) of the 120-foot guyed DGPS tower.

Tower Engineering Corporation A-7 1601 Fifth Avenue, Suite 1600

Photo No. 10

Photo No. 11

Photo No. 10 - A rusty bolt on the first guy level (45-feet) of the 120-foot guyed DGPS tower.

Photo No. 11 - A rusty bolt on the second guy level (82-feet) of the 120-foot guyed DGPS tower.

Tower Engineering Corporation A-8 1601 Fifth Avenue, Suite 1600

Photo No. 12

Photo No. 13

Photo No. 12 - A pull-off on the third guy level (133-feet) of the 120-foot guyed DGPS tower.

Photo No. 13 - General view of mid-level isolator series on third-level (133-feet) guy line on 120-foot guyed DGPS tower.

Tower Engineering Corporation A-9 1601 Fifth Avenue, Suite 1600

Photo No. 14

Photo No. 15

Photo No. 14 - Repaired attachment of grounding wires to the buried grounding anchor at guy Anchor B on the 120-foot guyed DGPS tower.

Photo No. 15 - Close-up view of the repaired attachment of grounding wires to the buried grounding anchor at guy Anchor B on the 120-foot guyed DGPS tower.

Tower Engineering Corporation A-10 1601 Fifth Avenue, Suite 1600

Photo No. 16

Photo No. 17

Photo No. 16 - Adjusting the guy tension for the 120-foot guyed DGPS tower.

Photo No. 17 - Guy tensioner used to adjust the guy tension for the 120-foot guyed DGPS tower.

Tower Engineering Corporation A-11 1601 Fifth Avenue, Suite 1600

Photo No. 18

Photo No. 19

Photo No. 18 - Overall view of the 30-foot DGPS tower.

Photo No. 19 - Base of the 30-foot DGPS tower with grounding wire properly leading into the soil.

Tower Engineering Corporation A-12 1601 Fifth Avenue, Suite 1600

Photo No. 20

Photo No. 21

Photo No. 20 - Weather-monitoring equipment mounted on the 30-foot DGPS tower.

Photo No. 21 - GPS unit mounted on the 30-foot DGPS tower.

Tower Engineering Corporation A-13 1601 Fifth Avenue, Suite 1600

Photo No. 22

Photo No. 23

Photo No. 22 - DGPS and GPS units mounted on a severely rusted bar at the top of the 30-foot

Photo No. 23 - Cleaned and cold-galvanized top mounting bar for the 30-foot DGPS tower; bar needs replacement.

Tower Engineering Corporation A-14 1601 Fifth Avenue, Suite 1600

Photo No. 24

Photo No. 25

Photo No. 24 - Rusty GPS mounting hardware on the 30-foot DGPS tower.

Photo No. 25 - Cleaned and cold-galvanized GPS mounting hardware on the 30-foot DGPS tower.

Tower Engineering Corporation A-15 1601 Fifth Avenue, Suite 1600

Photo No. 26

Photo No. 27

Photo No. 26 - Overall view of the 20-foot DGPS tower.

Photo No. 27 - Base of the 20-foot DGPS tower with grounding wire properly leading into the soil.

Tower Engineering Corporation A-16 1601 Fifth Avenue, Suite 1600

Photo No. 28

Photo No. 29

Photo No. 28 - Rusty GPS mounting hardware on the 20-foot DGPS tower.

Photo No. 29 - Cleaned and cold-galvanized GPS mounting hardware on the 20-foot DGPS tower.

Tower Engineering Corporation A-17 1601 Fifth Avenue, Suite 1600

Photo No. 30

Photo No. 31

Photo No. 30 - DGPS and GPS units mounted on a severely rusted bar at the top of the 20-foot

Photo No. 31 - Cleaned and cold-galvanized top mounting bar for the 20-foot DGPS tower; bar needs replacement.